WO2017019936A1 - Système de casque d'écoute sans fil - Google Patents

Système de casque d'écoute sans fil Download PDF

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Publication number
WO2017019936A1
WO2017019936A1 PCT/US2016/044640 US2016044640W WO2017019936A1 WO 2017019936 A1 WO2017019936 A1 WO 2017019936A1 US 2016044640 W US2016044640 W US 2016044640W WO 2017019936 A1 WO2017019936 A1 WO 2017019936A1
Authority
WO
WIPO (PCT)
Prior art keywords
ear
bud
wireless
body portion
wireless headset
Prior art date
Application number
PCT/US2016/044640
Other languages
English (en)
Inventor
Rajendra Kumar
Original Assignee
Khyber Technologies Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Khyber Technologies Corporation filed Critical Khyber Technologies Corporation
Priority to CN201680056431.7A priority Critical patent/CN108141485A/zh
Priority to US15/748,869 priority patent/US20180310088A1/en
Publication of WO2017019936A1 publication Critical patent/WO2017019936A1/fr

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/10Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/105Earpiece supports, e.g. ear hooks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/02Constructional features of telephone sets
    • H04M1/0202Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0254Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets comprising one or a plurality of mechanically detachable modules
    • H04M1/0258Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets comprising one or a plurality of mechanically detachable modules for a headset device
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/02Constructional features of telephone sets
    • H04M1/04Supports for telephone transmitters or receivers
    • H04M1/05Supports for telephone transmitters or receivers specially adapted for use on head, throat or breast
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/60Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H04M1/6041Portable telephones adapted for handsfree use
    • H04M1/6058Portable telephones adapted for handsfree use involving the use of a headset accessory device connected to the portable telephone
    • H04M1/6066Portable telephones adapted for handsfree use involving the use of a headset accessory device connected to the portable telephone including a wireless connection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/10Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1016Earpieces of the intra-aural type
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/10Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
    • H04R2201/107Monophonic and stereophonic headphones with microphone for two-way hands free communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00Details of connection covered by H04R, not provided for in its groups
    • H04R2420/07Applications of wireless loudspeakers or wireless microphones
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00Details of connection covered by H04R, not provided for in its groups
    • H04R2420/09Applications of special connectors, e.g. USB, XLR, in loudspeakers, microphones or headphones

Definitions

  • Wireless headsets are used to increase the convenience of mobile devices by leveraging functionality without requi ring the user to directly access and handle the mobile devices This keeps the user's hands free for other tasks and avoids the chore of having to look for a mobile device in a purse, vehicle compartment, pocket, ei cetera.
  • Wireless headsets are not used exclusively for mobile phone calls, but can also be used with multimedia and other functional or entertainment content. I leadsets not only increase convenience for the user, but also benefit people around the user, who might be disrupted by audio from a speaker held away from the user.
  • the wireless headset system includes a housi ng hav ing at least a wireless communication component configured to communicate with a wireless host device.
  • the housing includes: a body portion, an ear-bud portion having at least a speaker operatively coupled with the wireless communications component, and a neck portion having an ear-bud end and a body end. the ear-bud end coupled with the ear-bud portion, the body end coupled with the body portion, the neck portion separating the ear-bud portion and the body portion by a distance.
  • the housing is attachable on the wireless host device between an inner surface of the ear-bud portion and an inner surface of the body portion, and where the body portion and the ear-bud portion are positionable to vary the distance between the body portion and the ear-bud portion.
  • FIG. 1 is a cross-section view of an embodiment of the wireless headset device
  • FIG. 2 illustrates a perspective side angle view of an embodiment of the wireless headset device attached to a wireless host device
  • FIG. 3 illustrates a perspective front angle view of a second embodiment of the wireless headset device attached to a wireless host device
  • FIG. 4 illustrates a perspective side angle view of an embodiment of the wireless headset device attached to a wireless host device, further secured by a clip;
  • FIGS. 5a and b illustrate a perspective view of an embodiment of the wireless headset. Displayed are the inner surfaces of the ear-bud portion of the housing and the body portion of the housing.
  • FIG. 6 illustrates wireless communications between the wireless headset device, the wireless host device, and a second host device.
  • Embodiments of the invention relate to a wireless headset system for a wireless host device.
  • the wireless headset comprises a housing which includes a body portion, an ear-bud portion, and a neck portion which connects the body portion and ear-bud portion.
  • the neck portion can be curved or straight.
  • the shape of the housing allows the wireless headset to be attached to a wireless host device for convenient storage.
  • the housing can have at least a wireless communications component configured to communicate with the associated wireless host device.
  • the ear-bud portion comprises a speaker operatively coupled with the wireless communications component. While in use, the ear-bud portion is able to be inserted into the user's ear.
  • the body portion can have a microphone component which is operatively coupled with the wireless communications component.
  • the body portion can terminate as an electronic connector such as a USB connector, among others. Said electronic connector is coupled to a battery within the housing and is able to charge the battery via an outside power source such as a wall charging unit, computer port, or other electrical connector.
  • housing refers to a casmg that encloses and protects the internal components of a wireless headset, and generally defines the overall shape and structure of the headset at large.
  • the housing has an ear-bud portion, a body portion, and a neck portion, and can i nclude other elements in embodiments.
  • the housing may be constructed o one or more material s and is attachable on the wireless host device.
  • wireless communicati ons component refers to a component that is configured to perform at least one of transmitting or receiving data with at least a wireless host device,
  • the wireless communication component can communicate via any wireless communication protocol such as Bluetooth, WiFi, Zigbee, among others.
  • a “headset” refers to any system or device configured to be worn on a user's head
  • a headset can be a subcomponent of another system not entirely worn by the user or not worn in whole or part on a user's head. While this application is directed to headsets, such terminology is i ntended to convey the spirit of innovative aspects herein which may be equally applicable to other small components such as wearable devices on a user's collar, sleeve, wrist, or other body part, or a device having an optional stylus or other pointing device.
  • an "ear-bud” refers to any system, device, or component configured to produce sound and be at least partially insertable into a user's ear canal or sim ilarly attachable thereabout. While “ear-bud” is frequently recited in this disclosure, such terminology is intended to convey the spirit of innovative aspects herein which may be equally applicable to other small components and means for attaching non-ear-canal wearables such as clips, rings, hooks, headbands, adhesives, et cetera.
  • flexible is defined as being capable of bending without breaking.
  • Flexible may be used to describe a component that can bend in at least one of an inward direction and an outward direction.
  • positionable describes a component or device that can be temporarily flexed, compressed, or otherwise manipulated. The component or device then returns to a default “holding” position which provides enough force or friction to maintain the component or device's position on another object without external forces applied.
  • Compressible refers to a component or material which is able to be condensed with applied pressure. A “compressible” material can re-expand and provide a force which can provide a seal, increase friction, or clasp an item positioned in between compressible materials
  • “Stretchable” as used herein refers to a component or material which is able to be drawn out or expanded along the component or a dimension thereof by an applied force or forces without the component or material breaking. The “stretchable” material can return to its original default shape and length once the stretching force is removed.
  • display refers to any electronic device for the visual presentation of data which can include images, videos, et cetera.
  • a “display” may include any wearable display such as an over-eye display, a display integrated into eyeglasses or eyeglass frames, or a contact lens display among others.
  • a wireless headset device 100 includes a housing.
  • the housing includes at least a wireless communications component 600 configured to communicate with a wireless host device 201.
  • the housing comprises three major portions: a body portion 101, an ear-bud portion 102, and a neck portion 103.
  • the ear-bud portion 102 comprises at least a speaker 104 operatively coupled with the wireless communications component 600.
  • the neck portion 103 has an ear* bud end and a body end.
  • the ear-bud end of the neck portion 103 is coupled with the ear- bud portion 102 at an end of the ear-bud portion 102, this end hereinafter referred to as the "top" of the ear-bud portion 102, and the body end of the neck portion 103 is coupled with the body portion 101.
  • the wireless headset device 100 can also include body portion components 105, ear-bud portion components 106, and neck portion components 107, wherein any of these component groups can include the wireless communication component 600, a printed circuit board ("PCB”), a battery, an indicator light, a multifunction button, or other electrical, electronic, or mechanical functional and/or aesthetic components.
  • the body portion 101 can include a microphone component 108 which is operatively coupled with the wireless communications component 600.
  • the body portion 101 may also comprise at least one of a display, a camera, and/or other components. Further, the body portion 101 can terminate as an electronic connector 109 such as a USB connector or port. This electronic connector 109 is operatively coupled to the battery and functions to charge the battery from an outside source such as a wall charging unit, computer port, or other electrical adapter. In alternative or complementary embodiments, charging adapters can be located at other locations on or in electronic connector 109. In at least one embodiment, device 100 is configured to mate with a port of wireless host device 201 when connected to facilitate not only headset retention but also charging from wireless host device 201.
  • inner distance 1 12 depicts the distance between the inner surface of the ear-bud portion 502 and the inner surface of the body portion 501 at the top of the ear-bud portion, where the "top" of the ear-bud portion 102 is the end of the ear-bud portion 102 that is coupled with the neck portion 103.
  • this inner distance 112 is equal to or greater than the width of the wireless host device 201.
  • Clipping distance 113 depicts the distance between the inner surface of the ear-bud portion 502 and the inner surface of the body portion 501 at the bottom of the ear bud portion, where the "bottom" of the ear-bud portion 102 is the end of the ear-bud portion 102 that is not coupled with the neck portion 103.
  • the clipping distance 113 when the wireless headset device 100 is in its original default shape (meaning the device has no forces acting on it), the clipping distance 113 is equal to or less than the inner distance 112. In certain embodiments, the clipping distance 113 is less than the width of the wireless host device 201. Outward flexing of the ear-bud portion 102 and the body portion 101 increase the clipping distance 113 to allow the wireless headset device 100 to be clipped onto the wireless host device 201.
  • the wireless headset device 100 includes a clipping spring 110 coupled with the neck portion 103 and at least one of the body portion 101 and the ear-bud portion 102.
  • the clipping spring 110 has a spring tension that resists an increase to the clipping distance 113 by outward flexing.
  • a joint in general, can be any moveable, flexible, or deformable component interfacing between other components that allows those components to move with respect to one another.
  • This joint can include springs, hinges, bearings, et cetera.
  • the joint can also be constructed of rubber, plastic, or any other material that is flexible, stretchable, compressible, et cetera.
  • the parts that the joint links can be either rigid or flexible themselves
  • the joint I 1 I allows the neck portion 103 to be inwardly mobile towards the body portion
  • the joint 1 1 1 is formed at the connection point between the ear-bud portion 102 and the neck portion 103. In other embodiments, the joint 1 1 1 is vertically oriented and located wholly on the neck portion 103.
  • the neck portion 103 is at least partially flexible. With the neck portion 103 at least partially flexible, the body portion 101 and the ear-bud portion 102 are outwardly flexible.
  • “Outward” refers to a direction that is away from the opposing housing portion member. For example, an outward movement of the ear-bud portion 102 would be a movement in the direction away from the body portion 101. Further, an outward movement of the body portion 101 would be a movement in the direction away from the ear-bud portion 102.
  • “inward” refers to a direction that is towards the opposing housing portion member. “Outward” flexing increases the clipping distance 113 while “inward” flexing decreases the clipping distance 1 13.
  • the body portion 101 and the ear-bud portion 102 being outwardly flexible allows for a temporary increase in clipping distance 113 and allows the wireless headset device 100 to be positioned and clipped onto the host device 201.
  • the body portion 101 and the ear-bud portion 102 may be at least partially flexible as well.
  • the body portion components 105, ear-bud portion components 106, and neck portion components 107 can include the wireless communication component 600, a printed circuit board ("PCB"), a battery, an indicator light, or a multifunction button.
  • PCB printed circuit board
  • the battery may be curved, constructed from flexible material, or both.
  • the housing of the wireless headset device 100 is attachable on the wireless host device 201 between an inner surface of the ear-bud portion 502 and an inner surface of the body portion 501.
  • the wireless host device 201 can make contact with the entire surface area of the inner surface of the ear-bud portion 502 or the wireless host device 201 can make contact with a portion of the surface area of the inner surface of the ear-bud portion 502.
  • the wireless host device 201 can make contact with the entire surface area of the inner surface of the body portion 501 or the wireless host device 201 can make contact with a portion of the surface area of the inner surface of the body portion 501.
  • the distance between the ear-bud portion 102 and the body portion 101 can vary over the length 202 of the ear-bud portion.
  • a clip 400 can be used to removeably secure the wireless headset 100 housing to the wireless host device 201.
  • the clip 400 includes a plug 401 configured to mate with a port on the wireless host device 201. This port can be any type of connection such as an audio port, charging port, USB port, among others.
  • the clip 400 has a holding arm 402 to hold the headset 100 in place when the clip 400 is attached to the wireless host device 201.
  • a cross beam 404 connects the stabil izing side arms 403, the holding arm 402, and the plug 401.
  • clip 400 can match the geometry or contour of a device without coupling through a port. The user can remove the clip 400 from the wireless host device 201 anytime as desired.
  • the wireless headset device 100 has an inner surface of the body portion 501 and an inner surface of the ear-bud portion 502. These surfaces can be constructed of or coated with materials including flexible or compressible materials.
  • the inner surfaces of the body portion 501 and the ear-bud portion 502 can be constructed or coated with a single material or portions of the surface areas can consist of multiple different materials. In at least one embodiment, construction of these inner surfaces is from a soft elastomeric or rubberized material causing an increased friction with the wireless host device 201 surface.
  • the wireless communications component 600 is configured to communicate wirelessly with the wireless host device 201.
  • the wireless communication can be accomplished via any wireless communication protocol such as Bluetooth, Wi Fi. Zigbee, et cetera.
  • the wireless communications component 600 can be wirelessly paired with at least the wireless host device 201. Additionally, the wireless communications component 600 can be paired with the wireless host device 201 and at least a second host device 601.
  • the wireless host device 201 can be a wireless smartphone and a second host device 601 can be a laptop computer.
  • the user can, for example, use the wireless headset device 100 to listen to music or other audio sou reed from a laptop computer (second host device 601), but also seamlessly receive and answer phone calls sourced from the user's cell phone (wireless host device 201).
  • wireless host device 201, second host device 601, and others need not be exclusively wireless themselves, but only communicate wirelessly to interact with wireless headset device 100. In this manner, wireless headset device 100 may interact with, e.g., a desktop computer.
  • the wireless headset system includes a housing having at least a wireless communication component 600 configured to communicate with a wireless host device 201.
  • the housing includes: a body portion 101, an ear-bud portion 102 having at least a speaker 104 operati ve] y coupled with the wireless communications component 600, and a neck portion 103 having an ear-bud end and a body end, the ear-bud end coupled with the ear-bud portion 102, the body end coupled with the body portion 101, the neck portion 103 separating the ear-bud portion 102 and the body portion 101 by a distance.
  • the housing is attachable on the wireless host device 201 between an inner surface of the ear-bud portion 502 and an inner surface of the body portion 501, and where the body portion 101 and the ear-bud portio 102 are positionable to vary the distance between the body portion 101 and the ear-bud portion 102.
  • the distance between the ear-bud portion 102 and the body portion 101 varies over a length 202 of the ear-bud portion 102 wherein the body portion 101 and the ear-bud portion 102 are separated by an inner distance I 12 at a top of the ear-bud portion 102.
  • the inner distance 112 is equal to or greater than a thickness of the wireless host device 201.
  • the ear-bud portion 102 is separated from the body portion 101 by a clipping distance 113 at the bottom of the ear-bud portion 102. At least one of the ear-bud portion 102 and the body portion 101 are outwardly flexible to vary the clipping distance 113 based at least in part on the neck portion 103 being at least partially flexible. In another embodiment, at least one of the ear-bud portion 102 and the body portion 101 is constructed in part of a compressible material, the compressible material compressing or expanding to increase or decrease the clipping distance 113. In another embodiment, the neck portion 103 is curved.
  • the wireless headset 100 comprises a clipping spring 110 coupled with the neck portion 103 and at least one of the body portion 101 and the ear-bud portion 102.
  • the clipping spring 110 has a spring tension resisting increase to the clipping distance 113 by outward flexing.
  • the body portion 101 comprises a microphone component 108 operatively coupled with the wireless communications component 600,
  • the body portion 101 comprises at least one of a display and a camera
  • a clip 400 which includes a plug 401 configured to mate with a wireless host device 201 port The clip 400 is configured to removeably secure the wireless headset 100 housing to the wireless host device 201.
  • the wireless headset system comprises a battery in the housing.
  • the body portion 101 terminates with an electronic connector 109 coupled with the battery.
  • the electronic connector 109 can be a USB connector.
  • the wireless headset system includes a flexible printed circuit board in the housing.
  • at least one of the ear-bud portion 102 and the body portion 101 is constructed at least in part of a flexible material, the flexible material inwardly flexible to vary at least the clipping distance 1 13.
  • the body end of the neck portion 103 coupled with the body portion 101 forms a joint 1 1 1 .
  • This joint 1 1 1 can be constructed at least in part of a stretchable material.
  • the body portion 101 and the ear-bud portion 102 can be outwardly flexible to vary the clipping distance 1 13 based at least in part on the neck portion 103 being at least partially moveable about the joint 1 1 1 .
  • the wireless headset device 100 can have a clipping spring 110 coupled with the neck portion 103 and at least one of the body portion 101 and the ear-bud portion 102, the clipping spring 1 10 having a spring tension resisting outward movement about the joint l l l to increase the clipping distance 1 13.
  • the wireless communications component 600 can communicate with the wireless host device 201 using Bluetooth communications.
  • the wireless communications component 600 can be paired to the wireless host device 201 and at least a second host device 601.
  • embodiments “comprising,” “including,” or “havi ng” an element or a plural i ty of elements having a particular property may include additional such elements not having that property.
  • Certain embodim ents may be shown as having like or simi lar elements, however, this is merely for il lustration purposes, and such embodiments need not necessarily have the same elements unless specified i the claims.
  • the terms “may” and “may be” indicate a possibility of an occurrence within a set of circumstances; a possession of a specified property, characteristic or function; and/or qualify another verb by expressing one or more of an ability, capability, or possibility associated with the qualified verb. Accordingly, usage of “may” and “may be” indicates that a modified term is apparently appropriate, capable, or suitable for an indicated capacity, function, or usage, while taking into account that in some circumstances the modified term may sometimes not be appropriate, capable, or suitable. For example, in some circumstances an event or capacity can be expected, while in other circumstances the event or capacity cannot occur - this distinction is captured by the terms “may” and “may be. "

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Telephone Set Structure (AREA)
  • Headphones And Earphones (AREA)

Abstract

L'invention concerne un système de casque d'écoute sans fil comprenant un boîtier ayant au moins un composant de communication sans fil configuré pour communiquer avec un dispositif hôte sans fil. Le boîtier comprend : une partie de corps, une partie d'oreillette ayant au moins un haut-parleur couplé pour un fonctionnement au composant de communications sans fil, et une partie de cou ayant une extrémité d'oreillette et une extrémité de corps, l'extrémité d'oreillette étant couplée à la partie d'oreillette et l'extrémité de corps étant couplée à la partie de corps. Le boîtier peut être fixé sur le dispositif hôte sans fil entre une surface interne de la partie d'oreillette et une surface interne de la partie de corps.
PCT/US2016/044640 2014-07-31 2016-07-29 Système de casque d'écoute sans fil WO2017019936A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201680056431.7A CN108141485A (zh) 2014-07-31 2016-07-29 无线耳机系统
US15/748,869 US20180310088A1 (en) 2014-07-31 2016-07-29 Wireless headset system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201461999621P 2014-07-31 2014-07-31
US201562152850P 2015-04-25 2015-04-25
US14/814,190 US9883279B2 (en) 2014-07-31 2015-07-30 Wireless headset system
US14/814,190 2015-07-30

Publications (1)

Publication Number Publication Date
WO2017019936A1 true WO2017019936A1 (fr) 2017-02-02

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ID=55181471

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2015/043196 WO2016019286A1 (fr) 2014-07-31 2015-07-31 Système de casque d'écoute sans fil
PCT/US2016/044640 WO2017019936A1 (fr) 2014-07-31 2016-07-29 Système de casque d'écoute sans fil

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US2015/043196 WO2016019286A1 (fr) 2014-07-31 2015-07-31 Système de casque d'écoute sans fil

Country Status (3)

Country Link
US (2) US9883279B2 (fr)
CN (1) CN108141485A (fr)
WO (2) WO2016019286A1 (fr)

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CN208434085U (zh) * 2018-06-05 2019-01-25 歌尔科技有限公司 一种无线耳机

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US20160037249A1 (en) 2016-02-04
WO2016019286A1 (fr) 2016-02-04
US20180310088A1 (en) 2018-10-25
US9883279B2 (en) 2018-01-30
CN108141485A (zh) 2018-06-08

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